WMSIC Electronic Components

ERJ2RKF4022X

ModelERJ2RKF4022X
Package0402
BrandPANASONIC
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
PANASONIC ERJ2RKF4022X
Type
PANASONIC
Minimum package
10000 圆盘

Technical parameters

Power
100mW
Electronic Component
Electronic Component
Electronic Component
PANASONIC
Electronic Component
ERJ2RKF4022X
Electronic Component
1
Package
0402
Electronic Component
SMD Resistor
Electronic Component
±1%
Electronic Component
0.011g
Electronic Component
40.2kΩ
Electronic Component
1
Electronic Component
BM0264567792
Operating Temperature
55℃~+155℃
Operating Voltage
50V
Electronic Component
±100ppm/℃
Resistor Type
Resistor

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

松下ERJ2RKF4022X厚膜贴片电阻产品概述

ERJ2RKF4022X是松下(PANASONIC)推出的一款厚膜贴片电阻,采用0402(英制)小型封装,针对高密度电路设计场景优化,核心规格覆盖40.2kΩ阻值、±1%精度、100mW额定功率等,适用于便携电子、工业控制等对体积和精度有要求的领域。

一、产品定位与核心规格

该电阻属于松下厚膜贴片电阻系列中的高精度小功率型号,核心定位为小体积、高精度、宽温适应的基础无源元件。其核心规格明确:

  • 阻值:40.2kΩ(符合E96精密电阻系列标准阻值);
  • 精度:±1%(满足多数模拟电路对阻值误差的要求);
  • 功率:100mW额定功率(典型小信号电路的功率需求);
  • 封装:0402(英制,对应公制1005,尺寸1.0mm×0.5mm);
  • 品牌:松下(PANASONIC),行业公认的高可靠性无源元件供应商。

二、关键性能参数详解

(一)阻值与精度

40.2kΩ为E96系列精密电阻的标准阻值,±1%的精度意味着在25℃参考温度下,实际阻值范围为39.798kΩ~40.602kΩ,可满足信号调理、分压电路等对阻值一致性的要求。

(二)功率与电压限制

额定功率100mW,最大工作电压50V。需注意两者的关联:在最大电压50V下,电阻实际功耗为 ( P = U^2/R = 50^2/40200 ≈ 62mW ),远低于额定功率,因此电压限制是实际使用中的主要约束条件,需避免超过50V的瞬时或持续电压。

(三)温度系数与温区范围

温度系数(TCR)为±100ppm/℃,即温度每变化1℃,阻值变化±0.01%。结合工作温区-55℃~+155℃计算:

  • 155℃时,阻值变化量为 ( 40200×100ppm/℃×(155-25)℃ ≈ 5.23Ω ),阻值范围仍在±1%精度内;
  • 低温端-55℃同理,阻值变化符合设计预期。

(四)环保与认证

该电阻符合RoHS(无铅)、REACH等环保指令要求,满足全球电子市场的合规性需求。

三、封装与适用场景

0402封装是当前小型化电子设备的主流封装之一,尺寸仅1.0mm(长)×0.5mm(宽)×0.3mm(厚),可大幅提升PCB元件密度,适用于:

  • 便携电子:手机、蓝牙耳机、智能手环的信号滤波、分压电路;
  • 小型模块:物联网传感器节点、微型电源模块的反馈网络;
  • 高密度PCB设计:汽车电子辅助驾驶模块、工业控制PLC的小型子板。

四、可靠性与环境适应性

厚膜电阻的工艺特点(陶瓷基底+厚膜电阻浆料)决定了其具备较好的稳定性和抗环境应力能力:

  1. 抗振动冲击:可承受常规电子设备的振动环境(如汽车行驶中的振动);
  2. 宽温稳定性:-55℃+155℃的温区覆盖,支持工业级(-40125℃)及部分汽车级(-55~150℃)应用场景;
  3. 长期可靠性:松下厚膜电阻工艺成熟,长期使用中阻值漂移小,适合对可靠性要求较高的设备。

五、典型应用领域

  1. 消费电子:智能穿戴设备(心率传感器信号调理)、智能家居控制器(无线模块分压);
  2. 工业控制:PLC模拟量输入模块(信号衰减)、传感器接口电路(电桥平衡);
  3. 汽车电子:车载信息娱乐系统(音频信号滤波)、车身控制模块(小功率驱动);
  4. 通信设备:小型基站子板(射频信号匹配)、无线耳机蓝牙模块(电源滤波)。

六、选型与使用注意事项

  1. 功率降额:实际使用功率建议不超过额定功率的80%(即80mW),避免长期过载导致阻值漂移;
  2. 焊接工艺:回流焊需遵循松下推荐温度曲线(峰值240250℃,时间3060秒),避免过热损坏;
  3. 存储条件:未开封产品存储温度-40℃~+85℃,湿度≤60%,开封后建议12个月内使用;
  4. 阻值匹配:40.2kΩ为E96标准值,替换时需确认阻值和精度匹配,避免影响电路性能。

ERJ2RKF4022X凭借小体积、高精度、宽温适应等特点,成为众多精密小功率电路设计的可靠选择,尤其适合对元件密度和可靠性有双重要求的应用场景。

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